The Han Chinese have been the dominant ethnic group in China since ancient times, even during the reigns of the Mongols and Manchus. The ancestors of the Han people are The Yan Emperor and the Emperor, so the Han people call themselves the descendants of Yan Huang, and the Han people have been multiplying and living in the land of China for thousands of years, experiencing countless foreign invasions. In many cases, the blood of the Han people is no longer pure, not to mention that the Han people are not based on blood as the standard, and according to the DNA tests of various countries in the world, the Han people are still the purest ethnic group in the world. So where are the ethnic groups of Han Chinese ancestry in China?
According to the results of DNA testing by world anthropologists, the total number of Han people's Y chromosome SNP type O reached more than 75%, of which O1a was 12%, O1b was 10%, and O2a was about 60%, what is the significance of this string of numbers? Archaeologists have tested human skeletons found in the Yangshao culture dating back 7,000 years, and found that the Y chromosome SNP type of Yangshao humans at that time was also O2. It can be seen that the Han Chinese people in China have survived for more than 7,000 years and still retain the genes of their ancestors in their bodies.
There have been many great ethnic integrations in Chinese history, such as the two Jin Dynasties and the Northern and Southern Dynasties, the northern nomadic peoples occupied the Central Plains, in fact, throughout ancient history, the north has always been the first stop of foreign invasion, so the blood of the northern Han people is more complicated than that of the southern Han people, which is only relative. The purest Han Chinese living on Chinese soil today are the Hakka people living in the south.
The Hakka are actually a branch of the Han people, the Han people originated in the Yellow River Valley, it is also mentioned that the north is often invaded by the northern nomads, so many Han people fled to the south for refuge, the most famous is the Western Jin Dynasty "Yiguan Nandu". There have been many cases of Han migration to the south in Chinese history, and most of these Han people have fled to the Liangguang and Fujian areas, because they are called "Hakka" because they live in other places. They are generally not intermarried in the local area, and their lives are relatively stable, and their blood is relatively pure.
The Hakka retain the customs and language of the ancient Han Chinese. Hakka speak Hakka, and linguists believe that Hakka retains a lot of pronunciation in old Chinese — and Korean and Japanese also retain pronunciation of old Chinese, so some Chinese words are actually similar to Japanese. Hakka architecture and quite distinctive, such as the Hakka Tulou, when the Han people who fled to the south were either rich or expensive, and they had the financial resources to build strong tulou. Hakka people attach great importance to blood, ancestral halls are indispensable in Hakka villages, and now the footprints of Hakka people have traveled all over the world, the father of Singapore Lee Kuan Yew, the former Prime Minister of Thailand, Tha A Xin, Yingluck brothers and sisters are all descendants of Chinese Hakka!